Tis indeed a fascinating subject @SpudGunner… Although, I am no expert in British Deaf culture, much of the learning of BSL, is focused on the cultural side of Deaf people, and how they view the world, suffice to say, many aspects are completely at odds with our viewpoint… Your BSL teacher is nearly always Big D…Because their language is visual, hand shape of signs is ultra important, facial expression equally so, and eye contact, sign language is fun, but difficult to learn, I say fun, because you have to get up in class, and make a complete fool of yourself, so the class gets plenty laughs, usually at your expense, its very back to front, for instance, being polite, we might say to someone on first meeting them, “if you don’t mind me asking, what is your name”? Then a Big D would sign, "your name what’, it is brutally direct, no small talk (until they know you), and direct to the point, sign language is very condensed, its 5 times faster than you can speak, and up to 7 times quicker, this is very dependent on who is signing, it has its own structure, grammar, verbs, and nouns, it has placement, timelines, finger spelling, and something very interesting called multi-channels, these have no oral translation, they are unique to Deaf culture/sign language… Personally, thinking back, I probably put in many, many hundreds of hours learning BSL, I might get a fright, if I knew the exact figure, but it was a most enjoyable experience, gave me (eventually) a lot of confidence, and a fair bit of insight into Deaf culture, and I ended up working with mostly HOH, and sometimes Big D… Cheers Kev